/*
 * Copyright (c) 2010-2022. Axon Framework
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.axonframework.spring.config;

import org.axonframework.config.Configurer;
import org.axonframework.config.ConfigurerModule;
import org.axonframework.modelling.saga.repository.SagaStore;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

import javax.annotation.Nonnull;

/**
 * A {@link ConfigurerModule} implementation that configures a Saga based on configuration found in the Application
 * Context.
 *
 * @author Allard Buijze
 * @since 4.6.0
 */
public class SpringSagaConfigurer implements ConfigurerModule, ApplicationContextAware {

    private final Class<?> sagaType;
    private String sagaStore;
    private ApplicationContext applicationContext;

    /**
     * Initialize the Saga for given {@code sagaType}.
     *
     * @param sagaType The type of Saga to configure.
     */
    public SpringSagaConfigurer(Class<?> sagaType) {
        this.sagaType = sagaType;
    }

    /**
     * Sets the bean name of the {@link SagaStore} to configure.
     *
     * @param sagaStore the bean name of the {@link SagaStore} to configure.
     */
    public void setSagaStore(String sagaStore) {
        this.sagaStore = sagaStore;
    }

    @Override
    public void configureModule(Configurer configurer) {
        configurer.eventProcessing()
                  .registerSaga(sagaType,
                                sagaConfigurer -> {
                                    if (sagaStore != null && !"".equals(sagaStore)) {
                                        //noinspection unchecked
                                        sagaConfigurer.configureSagaStore(
                                                c -> applicationContext.getBean(sagaStore, SagaStore.class)
                                        );
                                    }
                                });
    }

    @Override
    public void setApplicationContext(@Nonnull ApplicationContext applicationContext) throws BeansException {
        this.applicationContext = applicationContext;
    }
}
